Elevator for shifting sewing machines



Dec. 21, 1954 0. cs. SHAGER ELEVATOR FOR SHIFTING SEWING MACHINES Filed July 10, 1951 Dew/e] q jfiqg/ BY A417 ATTORNEY United States Patent 6 2,697,243 ELEVATOR FOR SHIFTING SEWING MACHINES Daniel G. Shager, Philadelphia, Pa. Application July 10, 1951, Serial No. 236,047 1 Claim. (Cl. 1633) My invention relates to a sewing machine, and relates particularly to a sewing machine which will enable the machine to be rolled from one place to another.

Heretofore, heavy sewing machines have been shifted around in a factory depending upon the location where they are to be used. Many of these machines are eX- tremely heavy and they required several men to lift them and put them on dollies or to carry them around. This moving of the machines is a relatively costly proposition, is annoying and is diflicult.

It is an object of my invention to provide a machine wherein auxiliary elevators having rollers thereon may be attached to move the machine from one place to another.

Another object of my machine is to provide an attachment for elevating a heavy sewing machine which attachment may be quickly and easily attached to the sewing machine.

Another object of my invention is to provide an auxiliary elevator for a sewing machine which will remain in the position to which it is elevated as the weight will not cause the elevator to become depressed.

Other objects of my invention are to provide an elevating device which is easily and economically produced, which is sturdy in construction, and highly efficient in use.

With the above and related objects in view my invention consists in the details of construction and eorn bination of parts as will be more fully understood from the following description when read in conjunction with the accompanying drawing in which:

Fig. 1 is a perspective view of a sewing machine embodying my invention.

Fig. 2 is a side elevational view of the invention of Fig. 1.

Fig. 3 is another view showing the invention.

Referring now in greater detail to the drawing, I show an elevator, generally designated as A, which is adapted to be attached to legs 11 of a sewing machine and table, generally designated as B. The elevator A comprises a clamp which is adapted to fit around one leg 11 of a sewing machine and a unitary formed frame 12 in which a set of complementary beveled gears 14 and 16 are located. The helical gears 14 of two units A are mounted upon a single shaft 18.

A. vertically movable rod 20 having a series of helical teeth 16 thereon is in mesh with the helical spur gear 14, and at the bottom of the The rod 20 and its caster 24 are adapted to be elevated or lowered by the rotation of the complementary gear 14.

rod 20 is a caster 24. 6

by the rotation of a hand crank 26 which is attached to the shaft 18 one end or two legs of the sewing machine can be raised or lowered. The hand crank 26 is permanently attached to one end of the shaft 14. It also is pointed out that the turning of the crank raises both wheels at one end and there is a lock so that a pin 28 on the hand crank 26 can fit into one of a series of openings 30 to hold the crank in a fixed position.

Referring to Fig. 2 it can be seen that one set of these devices is attached to each end of the table and they can be removed from one machine after it is in position and attached to a second machine, hence the operation of moving heavy sewing machines can be performed by one man.

The shaft 18 is provided with an involute or spiral gear so that when the gear is turned it will not have a tendency to move by virtue of a weight being imposed thereon as it would be in the case of a spur gear.

Since the sewing machines have four legs, I preferably build my unit to have two casters and elevators integrally joined together.

Although my invention has been described in considerable detail, such description is merely intended as illustrative rather than limiting, as my invention may be variously embodied, and the scope of the invention is to be determined as claimed.

I claim as my invention:

A movable support means for a sewing machine table comprising a pair of spaced, parallel brackets, each of said brackets having one portion adapted to releasably table and having another portion adjustable mounting for a castor therein, each of said second portions having an opening therein, a pinion positioned in each of said openings, said pinions being connected to each other by a shaft extending therebetween, said shaft passing through openings formed in the sides of said brackets, a rack positioned in each of the openings of said second portions, each of said racks having gear teeth on one face thereof adapted to mesh with the gear teeth on its corresponding In other words,

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 115,060 Jones May 23, 1871 750,612 Crofut Jan. 26, 1904 979,898 Steele Dec. 27, 1910 1,065,161 Metz June 17, 1913 

